Coke oven machine side and greenhouse dedusting flue gas sulfide purification system

Abstract

The utility model relates to the technical field of coke oven flue gas treatment, and provides a coke oven machine side and greenhouse dust removal flue gas sulfide purification system, which comprises a dust removal main flue, an absorbent injection pipe, an absorbent feeder and an absorbent bin, compressed air can be introduced into the input end of the absorbent injection pipe, the output end of the absorbent injection pipe is connected to the side face of the dust removal main flue, the output end of the absorbent feeder is connected to the side face of the absorbent injection pipe, the absorbent bin is located below the dust removal main flue, and an absorbent discharging port is formed in the bottom end of the absorbent bin. And the absorbent discharge port is connected to the input end of the absorbent feeder. The device is simple in process, low in investment and operation cost, high in process stability and small in maintenance amount.

Description

Technical Field

[0001] This utility model relates to the field of coke oven flue gas treatment, and in particular to a sulfide purification system for coke oven machine side and greenhouse dust removal flue gas. Background Technology

[0002] With the development of coking technology, the coke oven side dust removal technology has become relatively mature. However, the coke oven side dust removal and desulfurization technology has not yet been widely applied. In order to protect the health of employees, improve the surrounding air quality, and meet environmental protection requirements, it is necessary to desulfurize the flue gas from the coke oven side dust removal to meet emission standards.

[0003] Currently, among the main flue gas desulfurization processes, dry moving bed desulfurization, sodium-based sodium bicarbonate desulfurization, and moving fluidized bed desulfurization can all meet the desulfurization requirements of coke oven dust removal flue gas. However, they have disadvantages such as complex processes, high investment and operating costs, poor stability of some processes, and large maintenance requirements. Utility Model Content

[0004] To address the aforementioned technical problems, a coke oven machine-side and greenhouse dust removal flue gas sulfide purification system is provided. This utility model features a simple process, low investment and operating costs, high process stability, and minimal maintenance. The technical means employed in this utility model are as follows:

[0005] A sulfide purification system for coke oven machine side and greenhouse dust removal flue gas includes a main dust removal flue, an absorbent injection pipe, an absorbent feeder, and an absorbent silo. Compressed air can be introduced into the input end of the absorbent injection pipe, and the output end of the absorbent injection pipe is connected to the side of the main dust removal flue. The output end of the absorbent feeder is connected to the side of the absorbent injection pipe. The absorbent silo is located below the main dust removal flue, and an absorbent outlet is opened at the bottom of the absorbent silo. The absorbent outlet is connected to the input end of the absorbent feeder.

[0006] Furthermore, it also includes a pressure relief pipe; a pressure relief port is provided at the top of the absorbent silo, the input end of the pressure relief pipe is connected to the pressure relief port, and the output end of the pressure relief pipe is connected to the side of the main dust removal flue.

[0007] Furthermore, it also includes a dust collector; the dust collector includes a dust collector body and a dust collector hopper, the side of the dust collector body is provided with a dust collector inlet and a dust collector outlet, the dust collector inlet is connected to the output end of the main dust collection flue, and the large opening of the dust collector hopper is connected to the bottom end of the dust collector body.

[0008] Furthermore, it also includes an absorbent feed pipe; an absorbent inlet is provided at the top of the absorbent silo, and the output end of the absorbent feed pipe is connected to the absorbent inlet.

[0009] Furthermore, it also includes an air cannon; the body of the air cannon is fixedly installed on the side of the absorbent hopper, and the muzzle of the air cannon is located inside the absorbent hopper.

[0010] Furthermore, it also includes a pressure regulating valve; the pressure regulating valve is fixedly installed on the top of the absorbent silo.

[0011] This utility model has the following advantages:

[0012] 1. In this utility model, the absorbent is loaded into the absorbent silo. Under the action of gravity, the absorbent enters the absorbent feeder through the absorbent outlet. The absorbent feeder can quantitatively supply absorbent into the absorbent spray pipe. The absorbent in the absorbent spray pipe can enter the main dust removal flue under the drive of compressed air and react with the sulfides in the dust removal flue gas in the main dust removal flue gas, thereby removing the sulfides from the dust removal flue gas. This utility model has a simple process, low investment and operating costs, high process stability, and low maintenance.

[0013] 2. In this utility model, the dust of the absorbent in the absorbent silo can enter the main flue of the dust removal system through the pressure relief pipe to ensure that the pressure in the absorbent silo is not too high.

[0014] 3. In this utility model, the dust removal flue gas in the main flue enters the dust collector body through the dust collector inlet. The solid particles in the dust removal flue gas are captured by the filter bags in the dust collector and fall into the dust collector ash hopper, and then discharged through a tanker truck or secondary conveying equipment.

[0015] 4. In this utility model, the input end of the absorbent feed pipe can be connected to the output end of the tank body of the loading tanker to deliver the absorbent into the absorbent silo.

[0016] 5. In this utility model, when the adsorbent clumps together and is difficult to feed, an air cannon can be controlled to break up the clumped adsorbent.

[0017] 6. In this utility model, when the pressure inside the absorbent silo rises sharply, the pressure regulating valve can be automatically opened to quickly release the pressure inside the absorbent silo. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1This is an overall structural diagram of a coke oven machine side and greenhouse dust removal flue gas sulfide purification system according to Embodiment 1 of this utility model;

[0020] Attached reference numerals: 1-Main flue for dust removal; 2-Pressure relief pipe; 3-Absorbent silo; 4-Pressure relief valve; 5-Control valve; 6-Manual slide gate valve; 7-Absorbent feeder; 8-Absorbent spray pipe; 9-Air cannon; 10-Absorbent feed pipe; 11-Pressure regulating valve; 12-Dust collector; 13-Valve; 301-First silo; 302-Second silo; 801-Second spray pipe section; 802-First spray pipe section; 1201-Dust collector body; 1202-Dust collector ash hopper. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] Example 1:

[0023] like Figure 1 As shown, a coke oven machine-side and greenhouse dust removal flue gas sulfide purification system includes a main dust removal duct 1, the axial direction of which is consistent with the horizontal direction. It also includes an absorbent injection pipe 8, an absorbent feeder 7, and an absorbent silo 3. The absorbent injection pipe 8 includes a first injection pipe section 802 and a second injection pipe section 801. The axial direction of the first injection pipe section 802 is consistent with the axial direction of the main dust removal duct 1 and is located directly below the main dust removal duct 1. The axial direction of the second injection pipe section 801 is consistent with the vertical direction. The bottom end of pipe section 801 is connected to the output end of the first jet pipe section 802. Compressed air can be introduced into the input end of the first jet pipe section 802. The top end of the second jet pipe section 801 is connected to the side of the main dust removal flue 1. The output end of the absorbent feeder 7 is connected to the side of the first jet pipe section 802. The axial direction of the absorbent hopper 3 is consistent with the vertical direction. The absorbent hopper 3 is located directly below the main dust removal flue 1. An absorbent outlet is opened at the bottom end of the absorbent hopper 3. The absorbent outlet is connected to the input end of the absorbent feeder 7.

[0024] Specifically, the input end of the first jet pipe section 802 is connected to the output end of the compressed air inlet pipe, the first jet pipe section 802 is fixedly installed with a pressure relief valve 4, and the compressed air inlet pipe is fixedly installed with a control valve 5.

[0025] Specifically, the absorbent feeder 7 is a grid valve, which is existing technology in this field and will not be described in detail here.

[0026] Specifically, the absorbent hopper 3 includes a first hopper body 301 and a second hopper body 302. The first hopper body 301 is a cylindrical structure with its axial direction aligned with the vertical direction and its top closed and bottom open. The second hopper body 302 is a funnel-shaped structure with its axial direction aligned with the vertical direction. The large opening of the second hopper body 302 is connected to the bottom of the first hopper body 301, and the small opening of the second hopper body 302 is the absorbent outlet.

[0027] In addition, a manual slide valve 6 is fixedly installed on the absorbent outlet.

[0028] In this embodiment, a pressure relief pipe 2 is also included; a pressure relief port is provided at the top of the absorbent silo 3, the axial direction of the pressure relief pipe 2 is consistent with the vertical direction, the bottom end of the pressure relief pipe 2 is connected to the pressure relief port, and the top end of the pressure relief pipe 2 is connected to the side of the main dust removal flue 1.

[0029] Specifically, the pressure relief port is located at the top of the first chamber 301.

[0030] In this embodiment, a dust collector 12 is also included; the dust collector 12 includes a dust collector body 1201 and a dust collector hopper 1202. The axial direction of the dust collector body 1201 is consistent with the vertical direction. A dust collector inlet and a dust collector outlet are provided on the side of the dust collector body 1201. The dust collector inlet is connected to the output end of the main dust collection flue 1. The axial direction of the dust collector hopper 1202 is consistent with the vertical direction. The large opening of the dust collector hopper 1202 is connected to the bottom end of the dust collector body 1201.

[0031] Specifically, a valve 13 is fixedly installed on the small opening of the dust collector hopper 1202.

[0032] In this embodiment, an absorbent feed pipe 10 is also included; an absorbent inlet is provided at the top of the absorbent silo 3, and the output end of the absorbent feed pipe 10 is connected to the absorbent inlet.

[0033] In this embodiment, an air cannon 9 is also included; the body of the air cannon 9 is fixedly installed on the side of the absorbent hopper 3, and the muzzle of the air cannon 9 is located inside the absorbent hopper 3.

[0034] Specifically, the air cannon 9 is fixedly mounted on the side of the second compartment 302.

[0035] In this embodiment, a pressure regulating valve 11 is also included; the pressure regulating valve 11 is fixedly installed on the top of the absorbent silo 3.

[0036] Specifically, the pressure regulating valve 11 is fixedly installed on the top of the first chamber 301.

[0037] The working principle of this embodiment:

[0038] In this embodiment, the manual slide gate valve 6 is normally open, and the valve 13 is opened when unloading ash;

[0039] This embodiment includes the following operating conditions:

[0040] Adsorbent feeding operation: The bottom end of the pressure relief pipe 2 connected to the absorbent silo 3 is used to replace the dust collector on the top of the silo in the prior art. The top end of this pressure relief pipe 2 is connected to the front end pipe of the main dust removal flue 1. It can not only play a role in pressure regulation, but also discharge the dust in the feeding process into the main dust removal pipe. At the same time, the absorbent silo 3 is equipped with a pressure regulating valve 11. During the process of the absorbent being fed by the feeding tanker, if the pressure in the absorbent silo 3 reaches the set value, the pressure regulating valve 11 can be adjusted to keep the pressure in the absorbent silo 3 balanced.

[0041] Normal production conditions: The start-up and shutdown of this embodiment are synchronized with the coke oven flue gas dust removal. When the dust removal on the coke oven side and the shed starts, that is, when the dust removal ground station is running normally, this embodiment starts working. The absorbent is fed sequentially through the absorbent hopper 3 and the manual slide valve 6, and is blown into the dust removal main pipeline by compressed air. A detection device is installed in the outlet chimney of the dust removal ground station. When the concentration changes, the feed rate of the absorbent feeder 7 is adjusted. The absorbent feeder 7 is frequency-controlled, thereby adjusting the feed rate of the absorbent to match the concentration change, thereby saving the amount of absorbent and reducing the amount of dust in the dust removal ground station.

[0042] Maintenance condition: When this embodiment is under maintenance, the manual slide valve 6 is closed, and the staff climbs the ladder to the top of the absorbent silo 3, opens the inspection inlet to check the condition inside the absorbent silo 3, and checks the condition of the equipment outside the absorbent silo 3. At the same time, an air cannon 9 is installed on the absorbent silo 3. When the absorbent is clumped and difficult to discharge, the air cannon 9 can break up the clumped absorbent.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A sulfide purification system for flue gas from a coke oven machine side and a shed, comprising a main dust removal flue (1), characterized in that, It also includes an absorbent spray pipe (8), an absorbent feeder (7), and an absorbent silo (3); Compressed air can be introduced into the input end of the absorbent injection pipe (8). The output end of the absorbent injection pipe (8) is connected to the side of the main dust removal flue (1). The output end of the absorbent feeder (7) is connected to the side of the absorbent injection pipe (8). The absorbent silo (3) is located below the main dust removal flue (1). An absorbent outlet is provided at the bottom of the absorbent silo (3). The absorbent outlet is connected to the input end of the absorbent feeder (7).

2. The coke oven machine-side and greenhouse dust removal flue gas sulfide purification system according to claim 1, characterized in that, It also includes a pressure relief pipe (2); The absorbent silo (3) has a pressure relief port at the top. The input end of the pressure relief pipe (2) is connected to the pressure relief port, and the output end of the pressure relief pipe (2) is connected to the side of the main dust removal flue (1).

3. The coke oven machine-side and greenhouse dust removal flue gas sulfide purification system according to claim 1, characterized in that, It also includes a dust collector (12); The dust collector (12) includes a dust collector body (1201) and a dust collector hopper (1202). The dust collector body (1201) has a dust collector inlet and a dust collector outlet on its side. The dust collector inlet is connected to the output end of the main dust collection flue (1). The large opening of the dust collector hopper (1202) is connected to the bottom end of the dust collector body (1201).

4. The coke oven machine-side and greenhouse dust removal flue gas sulfide purification system according to claim 1, characterized in that, It also includes an absorbent feed pipe (10); An absorbent inlet is provided at the top of the absorbent silo (3), and the output end of the absorbent feed pipe (10) is connected to the absorbent inlet.

5. The coke oven machine-side and greenhouse dust removal flue gas sulfide purification system according to claim 1, characterized in that, It also includes air cannons (9); The air cannon (9) is fixedly installed on the side of the absorbent silo (3), and the muzzle of the air cannon (9) is located inside the absorbent silo (3).

6. The coke oven machine-side and greenhouse dust removal flue gas sulfide purification system according to claim 1, characterized in that, It also includes a pressure regulating valve (11); The pressure regulating valve (11) is fixedly installed on the top of the absorbent silo (3).

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